查询词典 excess function

Tacking burning fuel oil as an example, the impacts of excess air coefficient a on the thermal efficiency and the corrosion of furnace tubes in tubular furnaces were discussed in this paper.

以燃烧燃料油为例，讨论了过剩空气系数α对管式加热炉热效率和炉管腐蚀的影响，并从设计、操作等方面针对这些影响提出了一些建议。

Based on the quasi-dimension combustion model, the emission model is set up in this dissertation. The NO emissions in different conditions of LPG engine can be simulated and calculated by the model. The calculated results show that the NO emissions are larger influenced by ignition timing and less influenced by compression ratio, finally, choosing a right coefficient of excess air will have great effect to reduce NO emissions.

本文在建立的准维燃烧模型基础上建立了排放生成模型，利用该模型对液化石油气发动机在变参数情况下NO的排放生成情况进行了模拟计算，计算结果表明点火提前角对NO的生成影响较大，压缩比对NO的生成影响较小，而选择合适的过量空气系数更是对降低NO的生成起着关键作用。

At the same time, when diesel runs in different altitude, because air density becomes different, the coefficient of excess of air has also been changed, so the work characteristic of diesel alters.

同时，柴油机运行在不同海拔下，由于进气密度不同，导致过量空气系数改变，从而其工作性能发生改变。

Following optimal operation conditions are found through orthogonal tests: the excess coefficient of added precipitator 1.2~1.3, the pH value at the reaction end 3~4, the reaction time 30min and the reaction temperature 50℃.

通过正交实验，找出了从提取草酸的优化操作工艺条件：沉淀剂的加入过量系数为1.2~1.3，反应终点pH值3~4，反应时间30min，反应温度50℃。

The experiment results showed that:in acid pickling process, when reaction temperature is 100℃, the leaching time is 2.5h, mixing speed is 400r/min, the sulfuric acid density of solution is 45% and excess coefficient of sulfuric acid is 1.5, recovery rate of iron from hematite is 82.3%.

实验表明：在酸浸过程中，当反应的温度为100℃，浸出时间为2.5h，搅拌转速为400r/min，溶液硫酸浓度为45%，硫酸过量系数为1.5时，对铁矿中铁回收率可达82.3%。

So the first method is the best one, which makes use of the temperature discrepancy between brick and flue gas during initial stage of combustion to intensify burning by excess coefficient of maximum coal gas against minimum air, so that the temperature at top of arch can reach the highest specified value 1350℃ in 15-30mins.

因此较优的燃烧制度是固定煤气量调节空气的快速烧炉法，即燃烧初期利用砖温与烟气温度相差较大的时机，以最大煤气量和最小空气过剩系数来强化燃烧，尽快在15～30min内将拱顶温度烧到规定的最高值1350℃。

A method of determining appropriate light intensities for saving energy was presented in the light of hydroxyl radicals being the primary reactants in the degradation of volatile organic compounds and an excess coefficient of light intensity was defined base on the assumption of complete utilization of excited electron-hole pairs.

分析了光催化过程中的光能损失，基于羟基自由基是降解挥发性有机物的主要氧化物种的假设提出了确定合适的光强来节约光能的方法，在假设电子空穴对完全利用的基础上定义了过量系数，并根据负载TiO2的玻璃平板反应器和泡沫镍反应器降解甲醛的实验数据确定了所需合适的光强和过量系数。

In the real bake-out process, it suggests that the air excess coefficient of burning should be controlled within 1 in order to avoid electrode being oxidized by high temperature fume; when the temperature is below 700 C, it rises slowly in temperature to bake out thoroughly and uniformly; when above 700 C, it speeds up in heating-up to reduce the electrode oxidation.

在实际焙烧过程中，为了减少高温烟气对电极的氧化，建议燃烧的空气过剩系数控制在1以下；700℃以前缓慢升温，以达到焙烧彻底、均匀的目的；在700℃以后，加快升温速度，以减少电极的氧化。

Coefficient of excess air

过量空气系数？

After taking those factors, such as stable combustion and reducing pollutant emissions into account, the following operation parameters are recommended: combustion temperature between 850℃ and 860℃, excess air coefficient of 1.35, secondary air fraction 40% and mass mixing ratio 30%.

综合考虑稳定燃烧和降低污染物排放等因素，得出一系列最佳燃烧参数。燃烧温度应该控制在850~860℃，过剩空气系数应该控制在1.35左右，二次风率应该控制在40%左右，质量掺混比应该控制在30%左右。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。